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| 南海北部海域气溶胶光学厚度研究 |
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刘大召1,2, 田礼乔3, 杨锦坤1, 陈楚群1
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1.中科院南海海洋研究所热带环境与动力重点实验室, 广东, 广州, 510301;2.广东海洋大学信息学院, 广东, 湛江, 524088;3.武汉大学测绘遥感信息工程国家重点实验室, 湖北, 武汉, 430079
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| 摘要: |
| 气溶胶光学厚度是大气校正所需要的重要参数。利用2006年9月7~30日中科院南海海洋研究所公开航次的多波段太阳光度计资料,得到了南海北部海域的气溶胶光学厚度。分析结果表明,南海北部海域气溶胶光学厚度在一天内的变化非常明显,最小值可达0.1(870 nm),最大值为0.9(440 nm),而日平均气溶胶光学厚度在0.2~0.6之间。结合同步观测气象数据,发现从陆地方向吹来的风,当风速达4 m/s,对气溶胶的光学厚度有非常明显的影响,而从大洋方向吹来的风,对气溶胶的光学厚度影响不明显。 |
| 关键词: 南海 气溶胶光学厚度 太阳光度计 |
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| 基金项目:国家自然科学基金(40676094)“激光雷达辅助的海岸带II类水体水色遥感大气校正研究”资助 |
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| STUDY OF AEROSOL OPTICAL THICKNESS OVER NORTHERN SOUTH CHINA SEA |
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LIU Da-zhao1,2, TIAN Li-qiao3, YANG Jin-kun1, CHEN Chu-qun1
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1.Key Laboratory of Environment Dynamics, South China Sea Institute of Oceanology, Chinese Academic of Sciences, Guangzhou 510301, China;2.Guangdong Ocean University, ZhanJiang 524088, China;3.State Key Laboratory of Information Engineering in Surveying,
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| Abstract: |
| The aerosol optical thickness is the primary parameter in the atmospheric correction algorithm.Based on the multi-wavelength sun-photometer data of an open navigation of South China Sea Institute of Oceanology,CAS,from September 7th to 30th 2006,the optical thickness of the northern South China Sea is obtained.The results indicate that the aerosol optical thickness of the northern South China Sea has extremely obvious diurnal change.The minimum value can be as low as 0.1(870 nm),the maximum value is 0.9(440 nm) and daily average optical thickness is about 0.2~0.6.Based on meteorological data simultaneously observed,it is discovered that the wind blowing from the land direction has extremely obvious influence on the aerosol optical thickness when it reaches 4m/s,but the wind blowing from the ocean direction does not have obvious influence on the optical thickness of aerosols. |
| Key words: South China Sea aerosol optical thickness sun-photometer |